“Jack is now in heaven, and that is going to be very annoying for a lot of people up there,” Schwarzenegger joked. “Because we know what is going to happen. He already has told St. Peter that the wakeup call is 6 in the morning.”

LaLanne, known to many as the “godfather of fitness,” died Jan. 23 in Morro Bay at age 96. He is survived by his wife of more than 50 years and three children.

Schwarzenegger was one of more than a dozen speakers at Tuesday’s “celebration of life” at Forest Lawn Hollywood Hills, where friends and family shared memories of LaLanne, noting his passion and infectious enthusiasm for life.

“Jack invigorated everyone,” Ferrigno said on his way into the ceremony.

LaLanne — described as a pioneer of the fitness industry — was also remembered for his many feats of strength.

During his lifetime, LaLanne swam from Alcatraz to Fisherman’s Wharf in San Francisco while donning handcuffs, swam the Golden Gate Channel while towing a 2,500-pound cabin cruiser and set a world record of 1,033 push-ups in 23 minutes.